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macropitting

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Published: 01 January 1996
Fig. 10 Helical gear with serious ledge wear due to micro- and macropitting More
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Published: 01 January 1996
Fig. 4 Fractograph showing the advanced stages of macropitting fatigue for a helical pinion tooth. Courtesy of GEARTECH More
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Published: 01 January 1996
Fig. 10 Relations between contact fatigue life, macropitting, and the film parameter (Λ) for EHD lubrication More
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Published: 01 January 2002
Fig. 40 Fractograph showing the advanced stages of macropitting fatigue for a helical pinion tooth More
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Published: 31 December 2017
Fig. 15 Macropitting on a wind turbine INT pinion caused by misalignment of the gear mesh. Source: Ref 1 More
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Published: 15 January 2021
Fig. 49 Fractograph showing the advanced stages of macropitting fatigue for a helical pinion tooth More
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Published: 30 August 2021
Fig. 20 Some fine macropitting on the elevator drive worm shown in Fig. 19 More
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Published: 30 August 2021
Fig. 31 Macropitting that appears to have been accelerated by a poor contact pattern that is not centered More
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Published: 30 August 2021
Fig. 44 Intermediate pinion with nonprogressive macropitting (corrective pitting) resulting from misalignment caused by base deflection during operation (dynamic soft foot) More
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002401
EISBN: 978-1-62708-193-1
... stresses at and below the contact surfaces and briefly summarizes bearings and gear characteristics. The article provides an overview of the key types of gear and bearing steels. It analyzes two types of macropitting that result from the subsurface growth of fatigue cracks, namely, subsurface-origin...
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Published: 01 January 1996
Fig. 8 Applied shear stress and material shear strength as a function of depth representing types of fatigue damage. (a) No damage. (b) Subsurface-origin, macropitting fatigue. (c) Micropitting or surface-origin macropitting fatigue. (d) Subcase fatigue More
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Published: 01 January 2002
Fig. 46 Applied shear stress and material shear strength as a function of depth representing types of fatigue damage. (a) No damage. (b) Subsurface-origin, macropitting fatigue. (c) Micropitting or surface-origin macropitting fatigue. (d) Subcase fatigue. More
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Published: 15 January 2021
Fig. 55 Applied shear stress and material shear strength as a function of depth representing types of fatigue damage. (a) No damage . (b) Subsurface-origin, macropitting fatigue . (c) Micropitting or surface-origin macropitting fatigue . (d) Subcase fatigue More
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Published: 01 January 1996
Fig. 4 Pitted gear teeth. Note micropitting at the pitch line, scattered macropits, and one area of gross pitting near the left end. More
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Published: 15 January 2021
Fig. 51 Fractograph showing the advanced stages of point surface-origin macropitting fatigue of raceway in which the origin is still visible More
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Published: 01 January 1996
Fig. 6 Fractograph showing the advanced stages of point-surface-origin macropitting fatigue of a bearing raceway in which the origin is still visible More
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Published: 01 January 2002
Fig. 42 Fractograph showing the advanced stages of point-surface-origin macropitting fatigue of a bearing raceway in which the origin is still visible More
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Published: 30 August 2021
Fig. 38 Fatigue crack showing multiple origins and ratchet marks that originated in dedendum macropitting. There is also a small very small fatigue zone on the other side. More
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Published: 01 January 1996
Fig. 5 Fractograph showing various advanced stages of geometric stress concentration with macropitting (spalling) fatigue of bearing raceways. Relative life numbers are indicated to show that propagation is not related to life. More
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003544
EISBN: 978-1-62708-180-1
... propagation in different environments. The article concludes with a discussion on rolling-contact fatigue, macropitting, micropitting, and subcase fatigue. corrosion fatigue crack growth crack initiation damage tolerance criterion fatigue fracture fatigue strength fatigue-crack propagation finite...